Optical disc apparatus including a disc tray

1. An optical disc apparatus, comprising:

a disc tray configured to have an optical disc medium placed thereon;

a main chassis formed in a box shape including an opened upper part, the main chassis including an opening in a front wall, the disc tray being configured to be moved in and out of the main chassis through the opening;

a plurality of support portions formed on the main chassis to support lower surfaces of guide rails formed along sides of the disc tray; and

a plurality of pressing portions formed on the main chassis to suppress floating of the guide rails,

wherein the plurality of support portions is arranged such that the front side of the disc tray is inclined upwards with respect to the rear side of the disc tray when the disc tray is accommodated in the main chassis.

2. The optical disc apparatus according to claim 1 , wherein:

one of the pressing portions is a long pressing portion which is formed longer, in the sliding direction, than other pressing portion; and

a lower surface of the long pressing portion includes:

an inclination part which is formed on the front side of the lower surface and inclines downwards toward the rear side; and

a parallel part formed to be connected with the rear side of the inclination part and to be parallel with a surface connecting upper parts of the support portions.

3. The optical disc apparatus according to claim 2 , wherein a boundary between the inclination part and the parallel part is formed in a curved surface.

4. The optical disc apparatus according to claim 2 , wherein the plurality of support portions is arranged such that the long pressing portion is held from opposing sides by the plurality of support portions in a sliding direction of the disc tray.

5. The optical disc apparatus according to claim 2 , wherein the long pressing portion is formed such that the parallel part faces a rear end of the guide rail when a position of a gravity point, in the sliding direction, of the disc tray, configured such that the optical disc medium is not placed thereon, is overlapped with a support portion located closest to the opening among the plurality of support portions.

6. The optical disc apparatus according to claim 5 , wherein the long pressing portion is formed such that the parallel part faces a rear end of the guide rail when a position of a gravity point, in the sliding direction, of the disc tray, configured such that the optical disc medium which has the maximum diameter is placed thereon, is overlapped with a support portion located closest to the opening among the plurality of support portions.

7. The optical disc apparatus according to claim 6 , wherein a boundary between the inclination part and the parallel part is formed in a curved surface.

8. The optical disc apparatus according to claim 7 , wherein:

a step portion is formed on each of both sides, in the sliding direction of the disc tray, of a bottom of the main chassis; and

the support portions comprise a convex shape to protrude from upper surfaces of both the step portions.

9. The optical disc apparatus according to claim 8 , wherein:

a side wall is provided for each of both sides, in the sliding direction of the disc tray, of a bottom of the main chassis; and

the pressing portions protrude from the side walls toward the inside of the main chassis.

10. The optical disc apparatus according to claim 1 , wherein:

a step portion is formed on each of both sides, in the sliding direction of the disc tray, of a bottom of the main chassis; and

the support portions comprise a convex shape to protrude from upper surfaces of both the step portions.

11. The optical disc apparatus according to claim 1 , wherein:

a side wall is provided for each of both sides, in the sliding direction of the disc tray, of a bottom of the main chassis; and

the pressing portions protrude from the side walls toward the inside of the main chassis.